Materials used for learning English play a pivotal role in making learners' inter-culturally competent; however, some domestic or national coursebooks for learning English mainly address the domestic or national culture as the criterion. In other words, they try to localize the coursebooks. Thus, controversies might arise. On one hand, we might need to have a clear definition of localization: is it focusing on the domestic culture for learning English or being able to introduce or maintain our own cultural values in intercultural communications via English language? On the other hand, what the consequences of setting the international culture or national culture as the criterion for materials development are.